Re: [Xen-users] xen 4.1 missing memory

["Ian Tobin" <itobin@xxxxxxxxxxxxx>]

Hey,

I set the dom0 min men to 512m in xend-config.sxp and ballooning is already 
enabled.  I rebooted and it initially shows 512m but one the vms are booted it 
drops to 256 .

Any other thoughts?

Thanks

 




 


On 17 Aug 2011, at 10:44, "Fajar A. Nugraha" <list@xxxxxxxxx> wrote:

> On Wed, Aug 17, 2011 at 2:35 PM, Ian Tobin <itobin@xxxxxxxxxxxxx> wrote:
>> Hi,
>> 
>> 
>> 
>> We have the dom0_mem=512M parameter set on boot which does show up after
>> booting however ive noticed that it drops to roughly 256M on one of the
>> boxes after the VMs are all started which is causing slow downs as it needs
>> to swap.
> 
> IIRC that is expected behaviour, no matter what version the kernel is.
> 
>> The kernel is 2.6.32.43, has anyone else seen this?
> 
> dom0_mem only sets dom0's initial memory. If domU needs more memory,
> dom0 can still baloon down. See dom0-min-mem and
> enable-dom0-ballooning on /etc/xen/xend-config.sxp to change this
> behavior.
> 
> -- 
> Fajar
> 
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> 


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